47561556 has 72 divisors (see below), whose sum is σ = 131918976. Its totient is φ = 13292160.

The previous prime is 47561543. The next prime is 47561557. The reversal of 47561556 is 65516574.

It is a super-2 number, since 2×47561556² = 4524203218282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47561557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26776 + ... + 28496.

It is an arithmetic number, because the mean of its divisors is an integer number (1832208).

Almost surely, 2^47561556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47561556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65959488).

47561556 is an abundant number, since it is smaller than the sum of its proper divisors (84357420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47561556 is a wasteful number, since it uses less digits than its factorization.

47561556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789 (or 1780 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 47561556 is about 6896.4886717807. The cubic root of 47561556 is about 362.3141966555.

The spelling of 47561556 in words is "forty-seven million, five hundred sixty-one thousand, five hundred fifty-six".